From 528f776df67c440361b2847b4da400d8754bf030 Mon Sep 17 00:00:00 2001 From: Giovanni Cabiddu Date: Mon, 29 Jun 2020 18:16:17 +0100 Subject: [PATCH] crypto: qat - allow xts requests not multiple of block Allow AES-XTS requests that are not multiple of the block size. If a request is smaller than the block size, return -EINVAL. This fixes the following issue reported by the crypto testmgr self-test: alg: skcipher: qat_aes_xts encryption failed on test vector "random: len=116 klen=64"; expected_error=0, actual_error=-22, cfg="random: inplace may_sleep use_finup src_divs=[45.85%@+4077, 54.15%@alignmask+18]" Fixes: 96ee111a659e ("crypto: qat - return error for block...") Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu --- drivers/crypto/qat/qat_common/qat_algs.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index 833d1a7..6bea6f8 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "adf_accel_devices.h" #include "adf_transport.h" @@ -1058,6 +1059,14 @@ static int qat_alg_skcipher_blk_encrypt(struct skcipher_request *req) return qat_alg_skcipher_encrypt(req); } +static int qat_alg_skcipher_xts_encrypt(struct skcipher_request *req) +{ + if (req->cryptlen < XTS_BLOCK_SIZE) + return -EINVAL; + + return qat_alg_skcipher_encrypt(req); +} + static int qat_alg_skcipher_decrypt(struct skcipher_request *req) { struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req); @@ -1117,6 +1126,15 @@ static int qat_alg_skcipher_blk_decrypt(struct skcipher_request *req) return qat_alg_skcipher_decrypt(req); } + +static int qat_alg_skcipher_xts_decrypt(struct skcipher_request *req) +{ + if (req->cryptlen < XTS_BLOCK_SIZE) + return -EINVAL; + + return qat_alg_skcipher_decrypt(req); +} + static int qat_alg_aead_init(struct crypto_aead *tfm, enum icp_qat_hw_auth_algo hash, const char *hash_name) @@ -1310,8 +1328,8 @@ static struct skcipher_alg qat_skciphers[] = { { .init = qat_alg_skcipher_init_tfm, .exit = qat_alg_skcipher_exit_tfm, .setkey = qat_alg_skcipher_xts_setkey, - .decrypt = qat_alg_skcipher_blk_decrypt, - .encrypt = qat_alg_skcipher_blk_encrypt, + .decrypt = qat_alg_skcipher_xts_decrypt, + .encrypt = qat_alg_skcipher_xts_encrypt, .min_keysize = 2 * AES_MIN_KEY_SIZE, .max_keysize = 2 * AES_MAX_KEY_SIZE, .ivsize = AES_BLOCK_SIZE, -- 2.7.4